Countable point grinding machine

Abstract

The utility model relates to the technical field of car body grinding, in particular to a countable point grinding machine which comprises a grinding head, a driving assembly and a conductive grab handle, and the conductive grab handle is connected with the driving assembly. A switch driving lever is arranged on the driving assembly, and the switch driving lever is exposed out of the conductive grab handle; the counter comprises a shell, a counting sensor, a signal processing unit, a display, a positive lead and a negative lead; the shell is connected with the driving assembly or the conductive grab handle; one end of the positive lead and one end of the negative lead are connected with the positive electrode and the negative electrode of the counting sensor respectively, the other end of the positive lead is located between the switch driving lever and the conductive grab handle and connected with the switch driving lever, and the other end of the negative lead is connected with the conductive grab handle. When the conductive grab handle is held for polishing work, the number of polished particles can be calculated, manual counting is not needed, manpower can be saved, the polishing efficiency is improved, and the particle counting accuracy can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle body grinding, and more specifically, to a countable point grinder. Background Technique

[0002] After the vehicle passes through the painting process and before entering the general assembly process, it is necessary for workers to manually grind the particles generated on the vehicle body during the painting process to ensure that the vehicle body has good product appearance, so as to be provided to the next process and market consumers. While grinding these particles, it is necessary to count the number of particles on the whole vehicle. The statistics of the number of particles can help understand the defect situation on the vehicle body surface, so as to analyze the production defects in the previous process, and then formulate effective improvement measures for the previous process.

[0003] At present, the particles on the vehicle body are mainly ground by a point grinder. The prior art discloses a new type of AC point grinder, which includes: a mechanical component and a body. The body includes a motor, a push button is arranged above the motor, a switch is connected to one end of the motor, a circuit board is connected to the switch, a speed regulation button is connected above the circuit board, a cable is connected to the switch, a cable sheath is arranged outside the cable, and a mechanical component is connected to one end of the body. When the worker uses the above point grinder to grind the vehicle body, it is still necessary to calculate the number of particles on the vehicle body. And manually calculating the number of particles requires a lot of time and energy, and manual calculation may be incorrect, which will mislead the improvement direction of the previous production process, resulting in the wrong formulation of improvement measures, thus affecting the production efficiency and quality of the whole vehicle. Content of the Utility Model

[0004] Aiming at the problem in the prior art that when the point grinder grinds the vehicle body, it is still necessary to manually calculate the number of particles, which not only consumes a lot of time and energy, but may also be incorrect in calculation and mislead the improvement direction of the previous production process, the utility model provides a countable point grinder, which can calculate the number of ground particles when grinding the particles on the vehicle body without manual calculation.

[0005] To solve the above technical problems, the technical solution provided by the utility model is:

[0006] A countable point grinding machine, comprising a grinding head, a driving assembly and a conductive handle. The driving assembly is used to drive the grinding head to vibrate or rotate, and the conductive handle is connected to the driving assembly. A switch lever is provided on the driving assembly, and the switch lever is exposed outside the conductive handle. The machine further comprises a counter, which includes a housing, a counting sensor, a signal processing unit, a display, a positive lead and a negative lead. The housing is connected to the driving assembly or the conductive handle. The counting sensor, the signal processing unit and the display are all arranged on the housing, and the counting sensor and the display are electrically connected to the signal processing unit respectively. One end of the positive lead and one end of the negative lead are respectively connected to the positive electrode and the negative electrode of the counting sensor. The other end of the positive lead is located between the switch lever and the conductive handle and is connected to the switch lever, and the other end of the negative lead is connected to the conductive handle, or the other end of the negative lead is located between the switch lever and the conductive handle and is connected to the switch lever, and the other end of the positive lead is connected to the conductive handle.

[0007] In the above technical solution, pressing the switch lever can trigger the driving component, so that the driving component drives the grinding head to move. After releasing the switch lever, the switch lever will return to the initial position, and the driving component will stop driving the grinding head to move. For the situation of "the other end of the positive lead is located between the switch lever and the conductive grip and is connected to the switch lever, and the other end of the negative lead is connected to the conductive grip", when it is necessary to polish the particles on the vehicle body, the operator can hold the conductive grip tightly, so as to press the switch lever to the maximum extent, so that one end of the positive lead contacts the conductive grip, thereby starting the driving component to drive the grinding head to vibrate or rotate; contacting the grinding head with the particles on the vehicle body can polish the particles; at the same time, after one end of the positive lead contacts the conductive grip, the counting sensor, the positive lead, the conductive grip and the negative lead form a closed loop, so that the counting sensor generates an electrical signal, and the counting sensor then transmits the electrical signal to the signal processing unit; after detecting the electrical signal, the signal processing unit performs a counting operation and sends the counting result to the display in real time for display on the display. After polishing each particle, the operator releases the switch lever to make the switch lever return to the initial position, and the driving component thus stops driving the grinding head to move, and one end of the positive lead is separated from the conductive grip after the switch lever is reset. For each particle polished, the operator presses the switch lever once, the counting sensor is turned on once, and the signal processing unit increases the count value by 1 to achieve the purpose of counting. It can be understood that for the situation of "the other end of the negative lead is located between the switch lever and the conductive grip and is connected to the switch lever, and the other end of the positive lead is connected to the conductive grip", the working principle of the above technical solution remains unchanged, so it will not be elaborated here.

[0008] Preferably, a clear button is provided on the housing, and the clear button is electrically connected to the signal processing unit. After finishing the polishing work of a vehicle body, the operator can press the clear button to send a signal of a clear request to the signal processing unit. After receiving the signal, the signal processing unit resets the current count value to zero and triggers the display to update the displayed number to zero. When finishing a vehicle body polishing or starting to polish another vehicle, pressing the clear button can reset the count to ensure that the new count starts from zero and avoid confusion with the previous data.

[0009] Preferably, the housing is provided with an installation cavity, the counting sensor and the signal processing unit are both located in the installation cavity, and at least part of the clear button is located outside the installation cavity. Arranging the counting sensor and the signal processing unit in the installation cavity can effectively protect the counting sensor and the signal processing unit from the influence of dust or moisture, etc., which is beneficial to extending the service life of the counter. Moreover, arranging the counting sensor and the signal processing unit in the installation cavity can also prevent accidental touch or misoperation, thereby improving the operation safety.

[0010] Preferably, the driving assembly is used to drive the grinding head to vibrate. Vibration grinding can provide a more uniform grinding effect compared to rotary grinding, which is beneficial to reducing heat accumulation and thus reducing thermal damage to the automobile body.

[0011] Preferably, the driving assembly includes a pneumatic vibrator and an air pipe. One end of the air pipe passes through the installation cavity and is connected to the air inlet of the pneumatic vibrator, and the other end is located outside the installation cavity; the housing is connected to the pneumatic vibrator. Compressed gas is supplied to the pneumatic vibrator through the air pipe to make the pneumatic vibrator vibrate, thereby driving the grinding head to vibrate. Compared with an electric vibrator or an electromagnetic vibrator, the pneumatic vibrator has a relatively simple structure, does not involve electrical components, and has fewer vulnerable parts, making it safer and more reliable to use.

[0012] Preferably, it further includes a transition cylinder provided with a protection cavity. One end of the transition cylinder is connected to the driving assembly, and the other end is connected to the housing; at least part of the positive lead and the negative lead are located in the protection cavity; one end of the air pipe passes through the protection cavity and is connected to the air inlet of the pneumatic vibrator. The transition cylinder can accommodate a part of the positive lead and the negative lead, providing a certain protection for the positive lead and the negative lead. Moreover, the transition cylinder can be held by the staff, facilitating the staff to hold the angle grinder without pressing the switch lever.

[0013] Preferably, a soft rubber sleeve is sleeved outside the transition cylinder. The soft rubber sleeve can improve the holding comfort of the transition cylinder and enhance the anti-slip performance of the transition cylinder, enabling the staff to firmly grasp the transition cylinder.

[0014] Preferably, the grinding head includes a vibrating head and an abrasive disc connected to the vibrating head, and the vibrating head is connected to the power output end of the driving assembly. The driving assembly drives the vibrating head to vibrate, thereby driving the abrasive disc to vibrate, and using the abrasive disc to grind the particles on the automobile body. It can be understood that the abrasive disc is a circular abrasive disc, which can grind various curved surfaces and corners of the automobile body, has strong adaptability, and is beneficial to improving the grinding efficiency.

[0015] Preferably, the axis of the abrasive disc is not parallel to the longitudinal axis of the conductive handle. That is to say, an angle is formed between the axis of the abrasive disc and the longitudinal axis of the conductive handle. Such a setting is more ergonomic, which can enable the staff to maintain a stable and comfortable holding posture when grinding the automobile body, and reduce the fatigue of the hands and wrists during the long-term holding of the conductive handle for grinding work.

[0016] Preferably, a plurality of anti-slip ridges are provided on the outer surface of the conductive handle. The anti-slip ridges can increase the roughness of the surface of the conductive handle, enabling the staff to firmly hold the conductive handle during the grinding operation and reducing the risk of the conductive handle slipping out of the staff's hands.

[0017] Advantages of the present utility model: By providing a counting sensor, a positive lead wire, and a negative lead wire, when the staff holds the conductive handle, the switch lever can be pressed against the positive lead wire to make contact with the conductive lever, forming a closed loop among the positive lead wire, the conductive handle, the negative lead wire, and the counting sensor, thereby enabling the counting sensor to perform one count; each time a particle is ground, a count can be made, eliminating the need for manual counting. This not only saves manpower and improves the grinding efficiency but also enhances the accuracy of particle counting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of a countable point grinder;

[0019] Figure 2 is a schematic top view of the counter;

[0020] Figure 3 is a schematic connection diagram of the counting sensor, the signal processing unit, and the display.

[0021] In the drawings: 1 - grinding head; 101 - vibrating head; 102 - grinding disc; 2 - driving assembly; 201 - pneumatic vibrator; 202 - air pipe; 3 - conductive handle; 4 - switch lever; 5 - housing; 6 - counting sensor; 7 - signal processing unit; 8 - display; 9 - positive lead wire; 10 - negative lead wire; 11 - reset button; 12 - transition cylinder; 13 - anti-slip ridge. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The drawings are only for illustrative purposes and should not be construed as limiting the present patent; for a better illustration of this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationships described in the drawings are only for illustrative purposes and should not be construed as limiting the present patent.

[0023] In the drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0024] The technical solution of the present utility model will be further specifically described below through specific embodiments and in conjunction with the drawings:

[0025] Embodiment 1

[0026] This embodiment is the first embodiment of a countable point grinder. As Figure 1 shown, it includes a grinding head 1, a driving assembly 2, and a conductive grip 3. The driving assembly 2 is used to drive the grinding head 1 to vibrate, and the conductive grip 3 is connected to the driving assembly 2; a switch lever 4 is provided on the driving assembly 2, and the switch lever 4 is exposed outside the conductive grip 3; it also includes a counter, which includes a housing 5, a counting sensor 6, a signal processing unit 7, a display 8, a positive lead 9, and a negative lead 10; the housing 5 is connected to the driving assembly 2; the counting sensor 6, the signal processing unit 7, and the display 8 are all arranged on the housing 5, and the counting sensor 6 and the display 8 are respectively electrically connected to the signal processing unit 7; one end of the positive lead 9 and one end of the negative lead 10 are respectively connected to the positive and negative electrodes of the counting sensor 6, the other end of the positive lead 9 is located between the switch lever 4 and the conductive grip 3 and is connected to the switch lever 4, and the other end of the negative lead 10 is connected to the conductive grip 3.

[0027] Working principle or process of this embodiment: Pressing the switch lever 4 can trigger the driving component 2, thereby causing the driving component 2 to drive the grinding head 1 to move. After releasing the switch lever 4, the switch lever 4 will return to its initial position, and the driving component 2 will stop driving the grinding head 1 to move. When it is necessary to polish the particles on the vehicle body, the staff can hold the conductive grip 3 tightly, thereby pressing the switch lever 4 to the maximum extent, so that one end of the positive lead 9 contacts the conductive grip 3, thereby starting the driving component 2 to drive the grinding head 1 to vibrate or rotate; contacting the grinding head 1 with the particles on the vehicle body can polish the particles; at the same time, after one end of the positive lead 9 contacts the conductive grip 3, the counting sensor 6, the positive lead 9, the conductive grip 3, and the negative lead 10 form a closed loop, causing the counting sensor 6 to generate an electrical signal, and the counting sensor 6 then transmits this electrical signal to the signal processing unit 7; after detecting this electrical signal, the signal processing unit 7 performs a counting operation and sends the counting result to the display 8 in real time for display through the display 8. After polishing each particle, the staff releases the switch lever 4, causing the switch lever 4 to return to its initial position, and the driving component 2 thus stops driving the grinding head 1 to move, and one end of the positive lead 9 separates from the conductive grip 3 after the switch lever 4 resets. For each particle polished, the staff presses the switch lever 4 once, the counting sensor 6 is turned on once, and the signal processing unit 7 increases the count value by 1 to achieve the purpose of counting.

[0028] Advantages of this embodiment: By setting the counting sensor, the positive lead, and the negative lead, when the staff holds the conductive grip, the switch lever can be pressed to make the positive lead contact the conductive lever, forming a closed loop among the positive lead, the conductive grip, the negative lead, and the counting sensor, so that the counting sensor performs one count; each particle polished can be counted once, eliminating the need for manual counting, which not only saves manpower and improves the polishing efficiency, but also improves the accuracy of particle counting.

[0029] Embodiment 2

[0030] This embodiment is the second embodiment of a countable point grinder. This embodiment is similar to Embodiment 1, and the difference lies in that, as shown in Figures 1 to 3 , a clear button 11 is provided on the housing 5, and the clear button 11 is electrically connected to the signal processing unit 7. After completing the polishing work on the body of a vehicle, the staff can press the clear button 11 to send a signal for a clear request to the signal processing unit 7. After receiving the signal, the signal processing unit 7 resets the current count value to zero and triggers the display 8 to update the displayed number to zero. When completing one body polishing or starting to polish another vehicle, pressing the clear button 11 can reset the count to zero, ensuring that the new count starts from zero and avoiding confusion with the previous data.

[0031] Furthermore, the housing 5 is provided with an installation cavity (not shown in the figure). Both the counting sensor 6 and the signal processing unit 7 are located in the installation cavity. A part of the zero-clearing button 11 is located in the installation cavity, and the other part is located outside the installation cavity. Arranging the counting sensor 6 and the signal processing unit 7 in the installation cavity can effectively protect the counting sensor 6 and the signal processing unit 7 from the influence of dust, moisture, etc., which is beneficial to extending the service life of the counter. Moreover, arranging the counting sensor 6 and the signal processing unit 7 in the installation cavity can also prevent accidental touch or misoperation, thereby improving the operation safety.

[0032] Specifically, the driving assembly 2 includes a pneumatic vibrator 201 and an air pipe 202. One end of the air pipe 202 passes through the installation cavity and is connected to the air inlet of the pneumatic vibrator 201, and the other end is located outside the installation cavity; the housing 5 is connected to the pneumatic vibrator 201. Compressed gas is conveyed to the pneumatic vibrator 201 through the air pipe 202, causing the pneumatic vibrator 201 to vibrate, thereby driving the grinding head 1 to vibrate. Compared with an electric vibrator or an electromagnetic vibrator, the structure of the pneumatic vibrator 201 is relatively simple, does not involve electrical components, and has fewer vulnerable parts, making it safer and more reliable to use.

[0033] Other features, working principles, and beneficial effects of this embodiment are the same as those of Embodiment 1.

[0034] Embodiment 3

[0035] This embodiment is the third embodiment of a countable point grinder. This embodiment is similar to Embodiment 2, the difference being that, as Figure 1 shown, it further includes a transition cylinder 12 provided with a protection cavity (not shown in the figure). One end of the transition cylinder 12 is connected to the driving assembly 2, and the other end is connected to the housing 5; a part of both the positive lead 9 and the negative lead 10 is located in the protection cavity; one end of the air pipe 202 passes through the protection cavity and is connected to the air inlet of the pneumatic vibrator 201. The transition cylinder 12 can accommodate a part of the positive lead 9 and the negative lead 10, providing a certain protection for the positive lead 9 and the negative lead 10. Moreover, the transition cylinder 12 can be held by the staff, facilitating the staff to hold the point grinder without pressing the switch lever 4.

[0036] Furthermore, a soft rubber sleeve (not shown in the figure) is sleeved outside the transition cylinder 12. The soft rubber sleeve can improve the holding comfort of the transition cylinder 12 and enhance the anti-slip performance of the transition cylinder 12, enabling the staff to firmly grasp the transition cylinder 12.

[0037] Furthermore, the grinding head 1 includes a vibration head 101 and a grinding disc 102 connected to the vibration head 101. The vibration head 101 is connected to the power output end of the driving assembly 2. The driving assembly 2 drives the vibration head 101 to vibrate, thereby driving the grinding disc 102 to vibrate, and using the grinding disc 102 to polish the particles on the car body. It can be understood that the grinding disc 102 is a circular abrasive disc, and the grinding disc 102 can polish various curved surfaces and corners on the car body, with strong adaptability, which is beneficial to improving the polishing efficiency.

[0038] Furthermore, the axis of the grinding disc 102 is not parallel to the length axis of the conductive handle 3. That is to say, a certain angle is formed between the axis of the grinding disc 102 and the length axis of the conductive handle 3. Specifically, that is to say, a 90° angle is formed between the axis of the grinding disc 102 and the length axis of the conductive handle 3. Such a setting is more ergonomic, which can enable the staff to maintain a stable and comfortable holding posture when polishing the car body, and reduce the fatigue of the hands and wrists during the long-term holding of the conductive handle 3 for polishing work.

[0039] Furthermore, a plurality of anti-slip ridges 13 are provided on the outer surface of the conductive handle 3. The provision of the anti-slip ridges 13 can increase the roughness of the surface of the conductive handle 3, enabling the staff to firmly grasp the conductive handle 3 during the polishing work and reducing the risk of the conductive handle 3 slipping out of the staff's hands.

[0040] Other features, working principles and beneficial effects of this embodiment are the same as those of Embodiment 2.

[0041] In the specific content of the above specific implementation manner, the technical features can be combined arbitrarily without contradiction. For the sake of concise description, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features does not exist in contradiction, it should be considered as the scope recorded in this specification.

[0042] Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A countable point grinder, comprising a grinding head (1), a driving component (2) and a conductive grip (3), wherein the driving component (2) is used to drive the grinding head (1) to vibrate or rotate, and the conductive grip (3) is connected to the driving component (2); a switch lever (4) is provided on the driving component (2), and the switch lever (4) is exposed outside the conductive grip (3); it is characterized in that, It further includes a counter, and the counter includes a housing (5), a counting sensor (6), a signal processing unit (7), a display (8), a positive lead (9) and a negative lead (10); the housing (5) is connected to the driving assembly (2) or to the conductive grip (3); the counting sensor (6), the signal processing unit (7) and the display (8) are all arranged on the housing (5), the counting sensor (6) and the display (8) are respectively electrically connected to the signal processing unit (7); one end of the positive lead (9) and one end of the negative lead (10) are respectively connected to the positive pole and the negative pole of the counting sensor (6); the other end of the positive lead (9) is located between the switch lever (4) and the conductive grip (3) and is connected to the switch lever (4), and the other end of the negative lead (10) is connected to the conductive grip (3), or the other end of the negative lead (10) is located between the switch lever (4) and the conductive grip (3) and is connected to the switch lever (4), and the other end of the positive lead (9) is connected to the conductive grip (3).

2. The countably-operated point grinder according to claim 1, wherein, A clear button (11) is provided on the housing (5), and the clear button (11) is electrically connected to the signal processing unit (7).

3. The countably operable point grinder according to claim 2, wherein, The housing (5) is provided with an installation cavity, the counting sensor (6) and the signal processing unit (7) are both located in the installation cavity, and at least part of the clear button (11) is located outside the installation cavity.

4. The countably-operable point grinder according to claim 3, characterized in that, The driving assembly (2) is used to drive the grinding head (1) to vibrate.

5. The countably operable point grinder according to claim 4, wherein, The driving assembly (2) includes a pneumatic vibrator (201) and an air pipe (202), one end of the air pipe (202) passes through the installation cavity and is connected to the air inlet of the pneumatic vibrator (201), and the other end is located outside the installation cavity; the housing (5) is connected to the pneumatic vibrator (201).

6. The countably-operated point grinder according to claim 5, wherein, It further includes a transition cylinder (12) provided with a protection cavity, one end of the transition cylinder (12) is connected to the driving assembly (2), and the other end is connected to the housing (5); at least part of the positive lead (9) and the negative lead (10) are located in the protection cavity; one end of the air pipe (202) passes through the protection cavity and is connected to the air inlet of the pneumatic vibrator (201).

7. The countably-operated point grinding machine according to claim 6, wherein A soft rubber sleeve is sleeved outside the transition cylinder (12).

8. A countable point grinding machine according to claim 1, characterized in that, The grinding head (1) includes a vibrating head (101) and a grinding disc (102) connected to the vibrating head (101), and the vibrating head (101) is connected to the power output end of the driving assembly (2).

9. The countably operable point grinder according to claim 8, wherein, The axis of the grinding disc (102) is not parallel to the length axis of the conductive grip (3).

10. A countable point grinding machine according to any one of claims 1 to 9, characterized in that, A plurality of anti-slip ridges (13) are provided on the outside of the conductive grip (3).

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